Describe the cleavage of calcite. Include the number of directions and degrees of cleavage angles.

Which figure (A or B) illustrates the cleaved sample of fluorite?  

For magnetite, list one diagnostic property that can help distinguish this mineral from others.

Name the physical property (hardness, color, streak, etc.) described by the following statement. Breaks along smooth planes

Provide an economic use for galena.

For halite, list one diagnostic property that can help distinguish this mineral from others.

A photo of agate, a variety of quartz composed of microscopically small crystals, is provided below. Based on this image, describe the habit of this sample.

Describe the cleavage of muscovite. Include the number of directions and degrees of cleavage angles.

Name a mineral that exhibits the physical property of striations.

Name a mineral that exhibits the physical property of one direction cleavage.